Bolt anchor



' Get. 2, 1923. 1,469,669

H. W. PLEISTER BOLT ANCHOR Filed April 12. 1922 2 Sheets-Sheet 1 :14; ll I 1) I ATTORNEY ma s H. W. PLEESTER v BOLT ANCHOR Filed Abril 12. 1922 I 2 Sheets-Sheet 2 I 4 w ,y' y

ATTORNEY i voids of the wall ofthe hole. The expand- 5 a citizen of the United States, residin Patented 0a. 2,1923.

TATESYPATE HALL, FORMEIRLY'KNOWN AS HENRY'B. NEWHALL, JR. H

BOLT ANCHOR.

Application filed April 12, 1922. Serial 1552,050.v

To all whom it. may concern:

Be it known that I, HENRY W; PLEISTER, at Westfield, in the countyof' Union and tate of New Jersey, have made certain new and useful Improvements in Bolt Anchors, of which the following is a specification taken in connection with the accompanying drawinvention relates to a bolt anchor and moreparticularly to the shield and means to connect the portions of the shield together sothat theyrwill not become sprung or separated in handling, or storage or transportation. l

My invention further relates to the combination of such a shield with an expanding.

member, which member is held within the shield by friction so that it will not become disconnected from the shield in such handling, storage and transportation.

My. invention further relates to a shield whichhas separate cooperating interlocking A breakable; engaging members which have sulficient strength to hold the parts of the shield and the interposed expanding member together. The interlocking members, however, are not strong enough to interfere with the expansion of the shield when it is expanded within a wall or other suitable support. Preferably thefinterlockfing engaging members are undercut or dovetailed'members, though of course this may be varied without departing from my in-' vention. V

My invention further relates to such a bolt. anchor in whichthe shield and-scone,

or expandingmember, are formed of materials of different strength, the expanding cone being ofgreater hardness and less ductilitythan the shield 7 My invention further relates to forming the shield of someductile material, as aluminum, brass, fibre lead or an alloy, so that when it is expanded the' metal will flow, more or less, into the irregularities and ing cone is formed ofosorne harder material, as for example, iron, wh ch may or may not be galvamzed.

fully hereinafter described and pointed, out in thecl'aimsp with the shield;'f Fig. 15 is" a further modification in which the wood, screw cuts its; own threads within;

In a q pa y ns r ings e '7 :WHENRY w. PIQEISTER, 0F WESTFI ELIS, NEW JERSEY, AssIG'NoR To Hin IR'ir' is. NEW- reference numerals refer 'tofsimilarpartsin f the several figures.

Fig. 1.: is'a vertical section or other. suitable support and the work sup about to be expanded through, it ,6'0 Ported, showing oneformbf my .bol g 1 1 7; Q

Fig. 2 is av verticalsection, the same as Fig. 1, showing'the bolt lanchor. expanded within the hole; Y

Fig. 3. is my shield;

I i aside elevationiof one form of...

a Fig. 4.1 311 end View trit shield showng Fig. 5 is a detail vertical s'ection of expanding: member shown in ,the 1 form ,ofa' cone;

Fig. 6 is an end elevation cone};

shown in Fig. 5;. a Fig. 7.is a side-elevation@showing the manner of assembling the, shield;and-.exT

panding member for shipment;

Fig-.8 i ofFig.3;- V

Fig; 9 is a side elevation v of. a; modificationshowing a different form of dovetail interlockinginembem.

s across sectlon on theline 8+8 undercut OIf-{ Fig. 10 is a side elevat on, similanto 9, showing the shield assembled with its coneready. for shipment, T

Fig. 11 is a side elevation of thesame' shield, as shown inFig. 3, with a wedge as the expanding member;

Flg. 12 is an end elevation of the. asse n bled. bolt anchor f Fi g F ig.; 13 is a vertical-section showing la modification wherein the expanding' mem ber is 'a lag screw which contactsdireotly. f

with theshield; Fig! 14 is ayertica l section of ,a'further modification which the expanding memlv ber is a machine bolt which contactsdirectly the ductile shield,

of Fig. 15;

Fig.16 .is a cross section 'theliiie Fig. 17 is'afurther meditation-sheeting use an expansion shieldiormedof 'a ,plu

rali tyi iof parts and conical nuts, provided 11 0 3;

with lugs or "hibje c tiens to cooperate with special enga in surfaces on the shield. To assemble these parts for shipping, it is necessary to bring the lugs or projections upon the cone member into cooperating position with the special engaging surfaces on the shield, and then secure the parts together by some binding member, as for example, wire Wrapped on the exterior or the shield, or spring rings. 'ljhismethod very enpensive and unsatisfactory, for considerable time is taken in assembling each of the bolt anchors.

It is round im resses that the vibration,

jostling 'ii'i trans ortation, 'aii'd handling will cause many at the coiistit uent parts of the bolt anchorsto become separated, so that the dealer, before putting them upon his shelves, has to go ever'the shipment to see whether or not all the bolt anchors are prdpeily assented and held together, and to reassemble such as have become separated dufiiig tI'iii s it. This takes additienal time, adds to the, expense and is a considerable anficyance is the dealer.

Pr'ir t6 invention it was also o'l'd to use cone nuts with tubular ductile lead sleeiies having" a; tapered interior bore and walls of uniform circumferential thickness, without ereev'es 61' sites to facilitate oi even to permit expansion by means of a bolt and wrench. I

Such mansions as I have jiist described required the use of special tools to drive the lead shield dowssove the cone nut. They required the heavy blows ot a hammer to caulk them down over the cone nuts to drift them out or ekpaiid themf I By means of slotseiiteiidiiigiiito the axial bore and one or,m ore s'e te sets 'ot iIiterlo'cking breakable engaging membersas hereinafter described, I overcome the disadvantages of the shield 'nia'de ot a plurality of parts provided with ,lugs, springs, etc, -and alsoovercome the objectionable features of the lead sleeves which required caulking tools and, the lgabo'i'ioiis worlc or Jca'ulking them in the wall with a hammeif.

I By my invention l obtain a boltjanchor.. which can in'anutactured' at minimum expense; requires no additional member to secure the parts together; can be assembledwith great speed and accuracy, and after sem'bl'ed and will not become ,disc onnected during transportation or hai'idliiig, so that 7 have an integral body member and integral tines, or itni'aybe-tormedfofjseparate members connected together by sets of interlocking b'endahlje bre kategengagmg themhers. I haire 'shown in Figs. 1 to 8, inclusive, my Shield 1 formed atone end with an integral body member 2 which is not slotted. This shield is provided with an axial bore which ha. the tapered or flaring portion at extending from the end 5 towards the body member 2, as shown in dotted lines in Figs. 1, 2, 3 and 7. In the particular form shown I employ two tines 6 and], which are integrally connected with the body member 2. They are also connected at their other ends by one or more separate sets or interlocking bendable or breakable en gaging members. These members are sure cieiitly strong to prevent the tines b ing spread apart in handling or transportation and are also sulii'ciently strohg to withstand the wedging action of the cone 8, when is driven in lightly into the flaring a'Xia'l bore l as shown in Fig. 7. Thisis to insuie that after the cone 8 has once been asse'm bled by being driven into the axial bore as shown in Fig. 7, it will be held by friction. It will not drop out of the shield from vibrations iii transp'ortatio'n' or from rough handling, thereby obviating the necessity of the purchaser or jobber going over the shipment to see whether or not all the bolt anchors are properlyass'einbled and held to gether, and to reassemble such as have become separated during transmission.

' ilhe partici'ilar term of separate interlocking bendable orbreakable engaging members between the tines 6 and 7 may vary as found convenientor expedient. in casting the shield 1, I cast the slots 9, 9 s'o that they extend from the exterior surface of the shield into the axial bore 4:, as shown in 8. At the same time l castthej intel-locking bendable or breakable engaging members 10 and 11, one of them b'eing upon one of the tines and the other cooperating locking member upon the other tine. Preferably these cooperating meijnhers are formed as undercut or dovetail engaging members, as shown in Figs. 1, 2, 3 and 7 y In positioning the complete assembled bolt anchor, Fig. 7, it isin'serted into the hole 12 in the wall or other suitable sup-- port 13 until. the surface 14,019 the shield is brought flush with the surface otthe wall 13. The machine or other bolt 15 is then in; serted througrha hole in the work leuntil its screw threads cooperate w'iththe threads 17 in the cone 8, as shown in Fig. By theni'otating the head of tlie'niachine bolt 15. the cone 8 is caused to move up the in-' clinedor flared axial bore 4 towards the work 16, but in doing so it will ordinarily fracture or rup'ture thecooperating inter locking, bendable ,Or breakable engagingmembers 10 and 11. The parts will then be in the position shown Fig. 2. 4 H In some instances itthehole 12 is1accurately drilled in the wall and thereis a close fit between the shield l andthe wall hit ' of the hole, the cooperating engaging'members and 11 might'simply' stretcliwithout breaking. Ordinarily however, the cooper-- ating'engaging surfaces we broken as shown in Fig. 2.

" If the shield 1 is formed of flow, more or less, into the interstices found in the'wall surrounding the hole. Such interstices are formed in the wall of holes drilled in manufactured stone or brick, and in natural stone, by the dislodgement of pebbles, coarse sand, and hard particles constituting the mass. By. forcing the metal to flow in these inequalities I obtain a particularly strong union or hold with the wall or other suitable support;

Used in an accurately drilled hole the ductile shield is compressed or shortened between the nut and the work and at'the same time the diameter of the shield is increased uniformly in all directions limited only by its powerful contact with the contour ofthe hole.

In Figs. 9 and 10, I have shown a modi .ing a shield having one" or more sets of' independent separated interlocking bendfication of my invention in which the shield 18 is provided with the same tines 6 and 7 separated by the slot 9.. In this as in the other form my interlocking bendable oi breakable engaging members 19 and are undercut, and might be called half a dovetail. In Fig. 10, I have shown the position of these undercut members 19 and 20 when the conical nut 8 is assembled ready for shipment. V

I have shown a modification of my invention in Figs. 11 and 12 in Which the shield 1 is the same as that shown in Figs. 1, 2, 3 and 7 but instead of using a conical nut 8, I use a wedge 21.

My invention is not to be confined simply to a shield which is expanded by a cone, wedge or other similar expanding member. I may, for example, form a shield 22 as inFig. 13 having a body member 23 and" tines 24.- and 25 connected together by the same interlocking bendable or breakable engaging members lOand 11. V In this form the expansion is caused by the lag screw 26 cooperating directly with the screw threads 27 within the'tines 24 and 25,'and without the aid of a cone or wedge.

In Fig. 14: I have shown a further 'modi-' fication in which the machine bolt 28 coopcrates with the machine threads 29 within the shield 30 to expand the tines 31 and 32.

In some cases the screw, as for example the wood screw 33, is screwed within the ductile shield 34v cutting its own screw threads and at the same time expanding the tines 35 and 36, which are connected at one end by the body member 37 and at their other end by the interlocking bendable or breakable engaging members 10 and 11.

uld be ruptured or I bers 39:and 40 which are-notconnected to- I some ductile I material, as in the preferred construction;

the metal of the-shield will be caused tolfiizsovme cilrsesill may 'folim a shieldbf' 'a.

plurality of -separate elements as shown'in i Fig. 17. 111 this modification, the shield'38 is formed of the separate "and distinct mem 701 .v

getherexcept' 'b'y separate sets of intermembers 10"" and 11. 5

. Having-thus described this invention in connection with-illustrative embodiments locking bendable or breakable engaging-f thereof,'to the details of which Ido not desire tobe limited, what" is claimed as new and what is desired to secure by Letters Patent is set forth in the appended claims.-

What I claim is 1. A new article of manufacture comprising a shield havingan integral body member and a plurality of tines extending from said body member, said tines having one or more sets of interlocking bendable or breakable engaging members adapted to hold the tines together and also hold,an interposed expanding member, for handling, storage and transportation and an interposed expanding member;

2. A new article of manufacture compris I able or breakable engaging members,

adapted to hold the partslof the shield to-- gether and also to hold an interposed expanding member from becoming disconnectinterlocking bendable or breakable engaging members, and an expanding member pressed 1nto sa d shield to cause the lnterlocking engaging surfaces to cooperate andhold said expanding member by friction Without breaking the engaging members, so that the parts of the assembled bolt anchor will notbecome separated in handling, storage and transportation. r

5. An assembled bolt anchor comprising a shield havingabody membe'rand a plu rality of tines, said tines being connected together by cooperating interlocking meme bers and anexpanding member pressed between the tines to cause the cooperating in terlocking membersto engage with each." other and hold. theexpanding member by. 125

friction so that the parts of the assembled bolt anchor Will not become separated in handling, storage and transportation.

6. An assembled bolt anchor'comprising a shieldhaving a body member and a plurality' of tines, said tines being connected a naoaese together by cooperating dovetail or undercut members and an expanding member .pressedbet-Ween the tines to cause the dovetail or undercut members to engagewvith each other and hold the expanding member an expans'ible ductile shield having an integral body member and integral ductile tines, the free ends of said tines being con-' nected together with separated interlocking members zand an expanding member pressed bet-Ween saidtines and held by frictional engagen'ient therewith, said separated interlocking members being-of sufficient strength to hold the tines from expanding in handling, storage and -transportation, and

adapted to be bent or broken When the; shield is expanded into its operative position.

HENRY W. PLEISTER. Witnesses i MARY R. RYAN, a ArINA M WILLIAMS. 

